Legio I Dacica

Legio I Dacica was a Roman legion which was raised in Zarmizegetusa, Dacia in 267 AD by Lucius Aurelian. In 270 AD, Legio I Dacica acclaimed Aurelian as the new Roman emperor following the death of Claudius Gothicus, but the Roman Senate proclaimed Quintillus as emperor in Rome; Aurelian led Legio I Dacica from its base in Pannonia and into Italy, where he battled against the pretender Quintillus' armies, as well as those of the Gallic Empire under Tetricus II.